Zigadenus micranthus

Eastwood

Bull. Torrey Bot. Club 30: 483. 1903.

Common names: Small-flower death camas
Endemic
Synonyms: Toxicoscordion micranthum (Eastwood) A. Heller Zigadenus venenosus var. micranthus (Eastwood) Jepson
Treatment appears in FNA Volume 26. Mentioned on page 85.

Plants 1–7 dm, from bulbs; bulbs not clumped, tunicate, ovoid, 10–35 × 8–30 mm. Leaves: proximal blades 12–45 cm × 2–10 mm. Inflorescences usually paniculate with 1–5 branches, occasionally racemose, 10–60-flowered, narrow, terminal raceme often pyramidal in early anthesis, 3–40 × 3–7 cm, proximal branches 2–13 cm, 1/10–1/2 length of entire inflorescence, diverging from main axis at 60°–90° when in fruit. Flowers: perianth hypogynous, campanulate, 5–12 mm diam.; tepals persistent in fruit, cream colored, 3–8 × 1–4 mm, outer sometimes with basal claw to 5 mm, usually with acute apex; gland 1, obovate, distal margins evident, dentate; filaments straight, ± equaling tepals or rarely longer, thickened proximally; pedicel usually perpendicular to stem in flower and in fruit, 12–40 mm, bracts white and membranous to green and foliaceous, narrowly lanceolate, 5–40 mm. Capsules 6–18 × 2–7 mm. 2n = 22.


Phenology: Flowering Apr–Jul.
Habitat: Serpentine hillsides
Elevation: 0–1000 m

Discussion

Selected References

None.

Lower Taxa

None.

"broad" is not a number."thicker" is not a number.

... more about "Zigadenus micranthus"
introrse +, extrorse +  and transverse +
reniform +
Fayla C. Schwartz +
Eastwood +
whorled +, opposite +  and alternate +
dilated +
reticulate-veined +  and parallel-veined +
green +  and white +
lanceolate +
0.5 cm5 mm <br />0.005 m <br /> (4 cm40 mm <br />0.04 m <br />) +
membranous +
1 +  and 5 +
not clumped +
10mm +  and 35mm +
0.8 cm8 mm <br />0.008 m <br /> (3 cm30 mm <br />0.03 m <br />) +
0.6 cm6 mm <br />0.006 m <br /> (1.8 cm18 mm <br />0.018 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
Small-flower death camas +
Calif. +  and Oreg. +
0–1000 m +
connate-coroniform +  and dilated +
staminate +  and pedicellate +
protandrous +  and bisexual +
loculicidal +  and septicidal +
membranaceous +  and leathery +
obovate +
Serpentine hillsides +
racemose +  and paniculate +
persistent +
many;several +
perpendicular +
1.2 cm12 mm <br />0.012 m <br /> (4 cm40 mm <br />0.04 m <br />) +
cream colored +  and greenish or red tinged +
0.5 cm5 mm <br />0.005 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
campanulate +
Flowering Apr–Jul. +
tapering +
12 cm120 mm <br />0.12 m <br /> (45 cm450 mm <br />0.45 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (1 cm10 mm <br />0.01 m <br />) +
1/10 length of entire inflorescence;1/2 length of entire inflorescence +
2 cm20 mm <br />0.02 m <br /> (13 cm130 mm <br />0.13 m <br />) +
Bull. Torrey Bot. Club +
contractile +
ellipsoid +
wind-distributed +
2 +  and 20 +
flattened +  and elongate +
adnate +  and free +
staminodial +
rudimentary +
barely larger +
Toxicoscordion micranthum +  and Zigadenus venenosus var. micranthus +
Zigadenus micranthus +
Zigadenus +
species +
cream colored +
persistent +
1mm;4mm +
3 cm30 mm <br />0.03 m <br /> (7 cm70 mm <br />0.07 m <br />) +
sepaloid +  and petaloid +
narrower +
rhizomatous +, bulbous +  and subscapose +
3 +  and 2 +
26 +, 11 +  and 8 +